Objective To investigate the imaging manifestations and diagnostic value of multi-slice spiral CT and B-mode ultrasonography in the classification of cystic hepatic echinococcosis.Methods CT and B-ultrasound findings and image characteristics of 105 patients with clinically proposed liver hydatid disease in Linzhi People's Hospital between October 2021 to December 2023 were retrospectively analyzed.Consistency of CT,B-ultrasound,and pathologic findings were evaluated by Kappa test,and receiver operating characteristic(ROC)curve analysis was performed,controlling for diagnostic efficacy of the two examination methods.Results A total of 142 lesions were detected by B-ultrasound and CT in 105 patients before operation,and 120 of them were proved by surgical pathology to be cystic liver hydatid disease,including 21 cases of single cystic type(CE1 type),15 cases of polycystic cystic type(CE2 type),41 cases of internal cystic collapse type(CE3 type),20 cases of consolidation type(CE4 type)and 23 cases of calcific type(CE5 type).Preoperative CT scans identified 121 cystic hepatic hydatid lesions and 21 non-hydatid lesions.110 hepatic hydatid cysts and 32 non-hydatid lesions were ultrascopically detected.With the Kappa test,there was a high agreement of CT examination with pathology.B-mode ultrasonography showed moderate agreement with pathology.From ROC curve analysis,the area under the curve(AUC)of CT was 0.870,the 95%CI was 0.803-0.920,and the area AUC of ROC curve of CT was greater than B-ultrasound,suggesting that CT examination was more diagnostic than B-ultrasound.The appearance of a child sac within a hydatid cyst was a characteristic imaging manifestation of hepatic hydatid disease.Calcification,another important characteristic alteration,was present in various types of cystic liver hydatid disease.Conclusion B-mode ultrasonography and CT are the main methods for examining cystic liver hydatid disease.Different types of cystic liver hydatid have different B-mode ultrasonography and CT manifestations,CT is more effective in diagnosis of cystic liver hydatid,and is valuable in early diagnosis,preoperative evaluation and efficacy detection.
Cystic hepatic hydatid diseaseMulti-slice spiral CTDiagnostic value
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